# THIS SOFTWARE IS A PART OF FREE COMPETITOR PROJECT
# THE FOLLOWING SOURCE CODE I UNDER THE GNU
# AGPL LICENSE V3 OR ANY LATER VERSION.

# This project is not for simple users, but for
# web-masters and a like, so we are counting on
# your ability to set it up and running.

import os
import json
from difflib import SequenceMatcher # checks how similar are two strings

def similar(a, b):
    # I guess it simpifies the syntax for SequenceMatcher
    # In the previous version we use Lavenshtain but it made
    # it an issue for some people to install.
    return SequenceMatcher(None, a, b).ratio()

def search_app(name):

    # This function output a json of an app that's the closest
    # match to the requested name.

    closest = {}
    match = 0
    
    all_apps = []
    for i in os.listdir("apps"):
        if i.endswith(".json"):
        
            try:
                with open("apps/"+i) as json_file:
                    idata = json.load(json_file)
            except Exception as e:
                print("Error!", i, e)
                idata = {}

            all_apps.append(idata)
    # Round 1. By the name

    for i in all_apps:
        for n in i.get("names",[]):
            m =  similar(n.lower(), name.lower())
            if m > match and m > 0.6:
                closest = i
                match = m

    if closest:
        return closest, match

    match = 0
    closest = {}

    # Round 2. By Generic name

    for i in all_apps:
        for n in i.get("generic_name",[]):
            m =  similar(n.lower(), name.lower())
            if m > match and is_free(i):
                closest = i
                match = m

    if closest:
        return closest, match

def suggest(json_data):

    # This function will suggest

    
    found = []
    all_apps = []
    for i in os.listdir("apps"):
        if i.endswith(".json"):
        
            try:
                with open("apps/"+i) as json_file:
                    idata = json.load(json_file)
            except Exception as e:
                idata = {}

            all_apps.append(idata)

    for i in all_apps:
        score = 0
        for c in ["generic_name", "networks_read", "networks_write", "formats_read", "formats_write"]:

            for b in json_data.get(c, []):
                if b in i.get(c, []):
                    score += 1

        # If software has issues of any kind we move it down.
        if "issues" in i and score:
            score = max(0.1, score - len(i["issues"]))

            
        found.append([score, i])
            
    try:
        found.sort(key=lambda x: x[0])
        found = list(reversed(found))
    except Exception as e:
        print("Found problem:", e)
        fount = []

    return found

def is_free(app):
    if "licenses" in app and app["licenses"]:
        with open("data/licenses.json", "r") as data:
            all_licenses = json.load(data)["licenses"]
            for al in all_licenses: # Making longer loop once
                for l in app["licenses"]:
                    if l in [al.get("licenseId",""),al.get("name","")]\
                    and al.get("isFsfLibre", False):
                        return True
        print("License Error! "+app.get("names",[])[0], "Check with data/licenses.json 'licenseId'")
    return False
